CN1313693A - Device and method for automatic terminal identification discovery in hierarchy different machines system - Google Patents
Device and method for automatic terminal identification discovery in hierarchy different machines system Download PDFInfo
- Publication number
- CN1313693A CN1313693A CN01111248A CN01111248A CN1313693A CN 1313693 A CN1313693 A CN 1313693A CN 01111248 A CN01111248 A CN 01111248A CN 01111248 A CN01111248 A CN 01111248A CN 1313693 A CN1313693 A CN 1313693A
- Authority
- CN
- China
- Prior art keywords
- port
- head
- network element
- message
- request
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- RGNPBRKPHBKNKX-UHFFFAOYSA-N hexaflumuron Chemical compound C1=C(Cl)C(OC(F)(F)C(F)F)=C(Cl)C=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F RGNPBRKPHBKNKX-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000015572 biosynthetic process Effects 0.000 claims description 31
- 238000001514 detection method Methods 0.000 claims description 28
- 230000004044 response Effects 0.000 claims description 10
- 230000008569 process Effects 0.000 abstract description 11
- 230000011664 signaling Effects 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 14
- 238000012360 testing method Methods 0.000 description 13
- 238000004891 communication Methods 0.000 description 8
- 230000000875 corresponding effect Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000012790 confirmation Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 230000004913 activation Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 102100040338 Ubiquitin-associated and SH3 domain-containing protein B Human genes 0.000 description 1
- 101710143616 Ubiquitin-associated and SH3 domain-containing protein B Proteins 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
- H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
- H04Q11/0478—Provisions for broadband connections
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
- H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
- H04J2203/0057—Operations, administration and maintenance [OAM]
- H04J2203/006—Fault tolerance and recovery
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
- H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
- H04J2203/0064—Admission Control
- H04J2203/0066—Signalling, e.g. protocols, reference model
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
A heterogeneous telecommunications system employs 'out of band' signalling to automatically discover the identity of the two ports connecting two network elements through a specific link. Either of the connected network elements may be a circuit switching network element or a packet switching network element. One network element initiates the port discovery process and transmits an overhead signal, such as a SONET/SDH protection switching message, to the network element attached at the other end of the link.
Description
The present invention relates to determining of telecommunication system middle port sign, be specifically related to determining automatically of heterogeneous system middle port sign.
In 1876, in the no elevator loft of 3 floor in the Scollay of Boston Massachusettes Square district, Alexander Graham Bell sent by telephone wire and says a word.In the past 123 years, technological innovation has greatly changed telecommunications industry.For example, it is far from each other with " manual operations " system that telecommunication switching system has become, in manual systems, it is intervention by human operator may that an equipment (passing through hierarchic switching network) is electrically connected to another equipment, and in fact he is inserted into another circuit to a circuit.The direct electrical connection of two or more channels between this two points (channel is arranged on each direction at least), it is the connection that provides dedicated channel to be used for exchange message to the user, is referred to as circuit switching or circuit switched.The system that human operator may mostly has been used electronic switching system (ESS) (ESS) replaces, and in electronic switching system (ESS), various device is dynamically connected by electronic system certainly by network.
In addition, in many cases, signaling system adopts light signaling to substitute the electronics signaling or adopts light signaling to add the electronics signaling.Yet this switching system often still adopts circuit-switched technology, and this is a kind of technology that produces high-reliability service, especially for " in real time " communications applications such as speech, when Speech Communication, the momentary loss that letter meets with is annoying, and the repeats lost of channel is unacceptable.Switching system for example, adopts tdma (TDM) by the circuit switching various telephone plants that can interconnect.Switching system can transmit digital telecommunications signal by the fiber path that accords with synchronous optical network (SONET) standard.This network comprises a plurality of network element, for example, and sonet network unit, SDH network element, or wavelength division multiplexed network unit.The circuit-switched network unit comprises any network element that accords with the SONET/SDH digital signals format.For example, at title the Technical Advisory (TA-NWT-000253 of " Synchronous Optical Network (SONET) Transport Systems:Common Generic Criteria ", Bell CommunicationsResearch, deliver September 6 nineteen ninety) in various signal formats are described, this article is incorporated in this is for reference.Know that following situation may be very important, which port in this system in the given network element (NE) is connected to the particular port of another NE in this system.
Though the SONET system can comprise the facility of this port identification, the network element in the circuit switching electrical communication system can utilize this facility to discern each port,, the network element in the packet switching system does not generally have the ability of port identification.That is, a kind of technology that is referred to as packet switching can be used for by telecommunications network transmission data.Utilize packet-switch technology, data send with grouping, and communication channel is just just occupied during transmitted in packets.After transmitted in packets, this channel can be used to transmit other grouping by other users.For example, can utilize asychronous transfer mode (ATM) to send the transmission of packetizing.Asychronous transfer mode (ATM) is a kind of connection-oriented transmission technology, and it utilizes the fixed-length block that is referred to as cell, and each cell comprises 5 eight bit group leaders' title and 48 eight bit group leaders' information field.The packet switching network unit, for example, ATM node or IP (IP) router is ignored the SONET signaling usually, otherwise it can be used for discerning the specific interconnected port in the telecommunications network.Therefore, require operator's intervention to finish this identification.This process is very consuming time, and may go wrong with high costs.Be referred to as different machine telecommunication system below utilizing circuit switching and packet switching network unit and adopting the system of SONET signaling.So the different machine telecommunication system that automatic port identification can be provided is the ten minutes needs.
Different machine telecommunication system according to the principle of the invention utilizes " band is outer " signaling to find the port-mark that interconnects between each network element in the system automatically, and this system comprises a plurality of circuit switching units and packet switch unit.The circuit-switched network unit and the packet switching network unit by using network management channel of interconnection, for example, Local Area Network network management link is found port link information (that is which port in the initialization network element, is connected to which port that receives in the network element) automatically.
According to principle of the present invention, every set of network elements (that is, a set of circuits crosspoint and a component group crosspoint) is determined one " head (leader) ".From the head of each network element group automatically reciprocation promptly, determine which port in the network element is connected to which port in another network element to determine the port link information.When the network head when its relevant network element receives the port identification request, promptly, when circuit-switched network unit head receives port identification request from a circuit-switched network unit, or when packet switching network unit head received the request of a packet switching network unit, this head was placed on this request in the formation.When the request of queuing reaches the top of formation, for example, adopt fifo queue, if the request of all fronts is serviced, then the network element head sends the network element head of identification request message to other set of network elements.This identification request sends by " outband channel ", for example, the network management link, it can take the form of LAN.
The initialization network element waits for from the affirmation signal that receives the network element head by outband channel, and in case receive this signal, just sends test post to the reception network element from particular port.The test post that the initialization network element sends can be SONET/SDH " K2 byte " protection message.After sending a confirmation message to the initialization network element, receive network element and begin their port of poll to detect which port acceptance test message.Detect its which port acceptance test message in case receive network element, this reception network element just writes down the port link information, and stops its port of poll.In addition, receive network element and send detect-message to receiving the network element head by outband channel, this message comprises the port-mark that receives network element.Receive the network element head and transmit this information to initialization network element head by outband channel.After receiving from the detect-message that receives the network element head, initialization network element head is transmitted this information to the initialization network element.After this, the initialization network element stops to send test post by the SONET/SDH link, writes down the port link information, and sends recognition and verification message to receiving network element and each network element head by outband channel.
According to the detailed description below in conjunction with accompanying drawing, this area professional is expressly understood above and other feature of the present invention, aspect, and advantage, in these accompanying drawings:
Fig. 1 is the conceptual block diagram according to the different machine telecommunication system of the multiple network element of the principle of the invention;
Fig. 2 is a form, and the definition of SONET/SDH channel status bit is described;
Fig. 3 is a state diagram, and the NE initialization according to the principle of the invention is described;
Fig. 4 is a sequence chart, and the automatic discovery procedure such as the utilizable port link information of system among Fig. 1 is described;
Fig. 5 is a state diagram, and the operation according to the non-head NE of the request of the principle of the invention is described;
Fig. 6 is a state diagram, and the operation according to the virtual head NE of the request of the principle of the invention is described;
Fig. 7 is a state diagram, and the operation according to the non-head NE of non-request of the principle of the invention is described; With
Fig. 8 is a state diagram, and the operation according to the non-request head NE of the principle of the invention is described.
Though network element herein can be meant SONET/SDH network element or atm network unit, we suppose that two types network element is utilized the SONET/SDH of transport level.In addition, we suppose that the circuit-switched network unit is carried out byte and handled, and this may be pretty troublesome for packet switching network unit (for example, atm network unit).Herein, term " SONET/SDH " network element and term " circuit-switched network unit " can exchange use, and term " atm network unit " can exchange use with term " packet switching network unit ".
Shown in conceptual block diagram among Fig. 1, comprise according to the different machine telecommunication system of the principle of the invention: a plurality of circuit-switched networks unit 100 (A1, A2, and A3) and a plurality of packet switching networks unit 102 (B1, B2, and B3).Each network element is passed through each port, for example, and the port one 04 (P1) of circuit-switched network unit A1, the port one 10 (P1) of port one 06 (P2) and port one 08 (P3) and packet switching network unit B 1, port one 12 (P2), with port one 14 (P3), be connected to other network element.
In the conceptual block diagram of Fig. 1, the port one 04 (P1) of NE A1 is connected to the port one 15 (P3) of NE B1 by link 116, the port one 08 (P3) that the port one 06 (P2) of NE A1 is connected to the port one 17 (P4) of NE B1 and NE A1 by link 118 is connected to the port one 14 (P3) of NE BN by link 120.Similarly, the port one 19 (P1) of NE A2 is connected to the port one 49 (P1) of NE B2 by link 121, the port one 29 (P3) that the port one 25 (P2) of NE A2 is connected to the port one 10 (P1) of NE BN and NE A2 by link 127 is connected to the port one 12 (P2) of NE BN by link 131.At last, the port one 33 (P1) of NE AM is connected to the port one 37 (P1) of NE B1 by link 135, the port one 45 (P3) that the port one 39 (P2) of NE AM is connected to the port one 43 (P2) of NE B1 and NE AM by link 141 is connected to the port one 23 (P2) of NE B2 by link 147.Every link 116,118,120,121,127,131 and 147 utilizes the SONET/SDH transport level, except the data of their transmission, also sends the expense control information by each bar link.
Though can utilize the control information of transmitting in these links with definite network element A1, A2, AM and B1, B2, the port interconnection of BN,, packet switch apparatus (for example, network element B1) must relate to " byte processing " to utilize this Overhead.This additional byte is handled to bear and is forbidden for packet switching NE, or is inconvenient at least.Yet this port interconnection information is essential for some application, and the artificial discovery of this interconnectivity information and record also have important disadvantages.According to principle of the present invention, " band is outer " communication channel, for example, the communication channel that link 122 and interface 124,126,149,151,153 and 155 form lays respectively at NE A1, NE A2, NE AM, NE B1 is in NE B2 and the NE BN.This outband channel can adopt the form of Local Area Network, and it connects one group of NE and management and control path is provided for the NE that so connects.According to principle of the present invention; NE supports STS-1 line overhead K1 and K2 byte protection exchange; at Ming-ChwanChow: " Understanding SONET/SDH Standards and Applications "; Andan Publisher; NeW Jersey; 1995, give among pp.2-25 to 2-28 and the pp.7-39 to 7-40 to discuss, it is incorporated in this is for reference.More particularly, NE supports this standard, is the K1/K2 byte definition that proposes in the table of Fig. 2 (bit 6,7 and and 8 definition only are described) at least.
According to principle of the present invention, circuit switching and packet switching network unit are used for the protection exchange and use K1 and K2 byte, utilize these bytes as identification signal, thereby can utilize automatic interconnection identification protocol (AIRP) to find port-mark automatically.Shown in the form among Fig. 2, bit code 101 and 100 is not pre-assigned.Utilize bit code 100 as AIRP SONET/SDH identification signal according to principle of the present invention.New Deal (AIRP) can utilize LAN to connect or serial link, adopts the transport layer of TCP as communication session.Utilize single AIRP session can find two port interconnections between the peer layer, in order to set up and to keep port interconnection information, the AIRP session moves in the time of should or restarting in each NE initialization.As described in detail below, NE can the discovery procedure of its enable port interconnectivity, and this is to realize to the NE that its connects by transmit port identification initiation message.
According to principle of the present invention, its enable port interconnectivity discovery procedure that by sending the NE that the identification request message connects through network link to it, NE can be under various environment (for example, its initialization or restart).This message is at first transmitted the head of group by the NE that starts.That is, according to principle of the present invention, every set of network elements 100 and 102 is elected a head who coordinates the port identification process.The head of NE of starting ranks to the port identification request from its NE, and asks reception network element (for example, network element B1) by the identification that the outer link 122 of band transmits initialization network element (for example, network element A1).Initialization network element head (for example, NE A1) waits for from the affirmation signal that receives network element B1, in case receive this signal, just transmit confirmation signal to the NE that starts, so the test post that the NE that starts sends from particular port (for example, port P1 104) arrives reception network element B1.The test post that the initialization network element sends can be SONET/SDH " K2 byte " protection message.
After sending a confirmation message to the initialization network element by link 122, receive the network element head and remind reception NE (for example, NE B1), receive NE and begin its port of poll to detect which port acceptance test message.Detect its which port acceptance test message (the port P3 115 in this illustrative example) in case receive network element, receive network element record port link information, and stop its port of poll.In addition, receive network element B1 and send detect-message to initialization network element A1.This detect-message comprises the port-mark that receives network element, for example, sends by receiving NE head by outband channel link 122.After receiving from the detect-message that receives network element B1, initialization network element A1 stops to send test post by SONET/SDH link 118, record port link information, and pass through outband channel 122 transmission recognition and verification message to receiving network element B1.
After initialization, each NE takes on head role or non-head role.Each non-head's packet switching NE (the ATM NE in the following example) sets up TCP with the virtual head of ATM and is connected.NE head or virtual head " elect " according to method as described below.The virtual head of ATM sets up TCP at (below be referred to as LAN) on the identical outband channel and all non-head ATMNE and is connected.Similarly, each non-head's packet switching NE (the SONET NE in the following example) sets up TCP with the virtual head's node of SONET and is connected, and is connected and the virtual head of SONET sets up TCP with all non-head ATM NE on LAN.If provide M ATM NE and N SONET NE, then required TCP connection adds up to 2
*(M+N-2).(, then need M if adopt based on point-to-point connection
2+ N
2-M-N TCP connects).If non-head NE breaks down, or the LAN of the fault of this NE self or this NE connection fault, then NE head is this signalling trouble network management system.If head NE breaks down, or the fault that is connected with LAN of the fault of this NE or it, then carry out the head repeatedly and elect process, newly the head who is elected to is the signalling trouble network management system of above NE.
After initialization, two end systems, promptly, between two NE, one is from circuit switching unit, and another is from packet switch unit, and they utilize automatic interconnection identification protocol (AIRP) the exchanging interconnection identifying information according to the principle of the invention, and these two end systems are referred to as " AIRP peer layer ".The communication mechanism of AIRP is based on LAN and connects, and utilizes the reliable transport layer of TCP as session.Between the AIRP peer layer that two multilinks connect, only require an AIRP session.When the each initialization of NE system or when restarting, should set up the AIRP session.Illustrative embodiment at Fig. 1 neutralizes in the following discussion, and M ATMNE (generally being packet switching NE) connects by operation LAN, and N SONET NE (generally being circuit switching NE) connects by another operation LAN.Utilize router (not shown) this two sub-networks that interconnect.Each LAN has its pre-configured replay address.Any ATM NE can utilize SONET NE LAN replay address to arrive any SONETNE, and any SONET NE can utilize ATM NE LAN replay address to arrive any ATM NE.Each port of each ATM NE is by the switch name, and slot numbering and port id are identified, and each port of each SONET NE is identified by TID and AID (port numbering and NADDR).
AIRP comprises 7 operation informations:
1.AIRP_Recognition_Request message is used to ask the counterparty to participate in the identifying that interconnects.
2.AIRP_Recognition_Notification message, the virtual head of SONET is used to notify each SONET NE to begin polling procedure.
3.AIRP_Recognition_Grant message, the virtual head of ATM is used to permit the link identification request of certain ATM NE.
4.AIRP_Recognition_Response message is used for response request side.
5.AIRP_Recognition_Detected message is used for the interconnection id information of notice request side's correspondence.
6.AIRP_Ack message, the requesting party is used for returning to Requested Party as positive confirmation message.
7.AIRP_Nak message, Requested Party are used to point out certain Negative Acknowledgement situation.
Various states and the transformation between those states when initialization that state diagram explanation NE among Fig. 3 can present.Process is in step 300 beginning of initial state, and wherein NE sends AIRPHello message and initiated innovation timer (ACK_timer).If NE is ATM NE, then it has ATM group MAC Address.If NE is SONET NE, then it has SONET group MAC Address.When system initialization, " restart " is initialized as 0 global variable.Process proceeds to the step 302 of wait state from initial state.If NE received AIRP_Leader_Ack message before ACK_timer stops, then this NE stops timer, and is converted to the step 304 that TCP sets up state.If this NE receives any AIRP_Hello message, then it returns AIRP_Hello_Ack message.If this NE receives AIRPHello_Ack message from other NE, then its storage package is contained in the information in the AIRP_Hello_Ack message.If ACK_timer is overtime before NE receives AIRP_Hello_Ack message, then this NE stops timer, turns back to the step 300 of initial state.If ACK_timer is overtime, need be from head's affirmation message, but NE receives a plurality of AIRP_Hello_Ack message from other NE, and then this NE stops timer, and proceeds to the step 306 of head's computing mode.Any message overtime or that receive outside the AIRP_Hello_Ack message turns back to initial state 300 to NE.
Set up state 304 at TCP, NE sets up TCP with the NE that is identified as NE head and is connected.This NE is reset mode variable re_start=0 also, and proceeds to the step 308 of non-head's operating state.If NE can not successfully set up TCP with this head to be connected (connect and suspend), then this NE gets back to the step 300 of initial state.If NE receives AIRP_Hello message, then it returns AIRP_Hello_Ack message.
In head's computing mode 306, NE classifies all MAC Address, this address comprise from the AIRP_Hello_Ack message sink of other NE to the address and its MAC Address, and " elect " head based on these addresses.For example, have superlatively that the NE of location can be used as the head,, then it is considered as the head that elected, and proceeds to its step 312 as the head if this NE self has maximum MAC Address.Otherwise this NE proceeds to its step 310 as non-head.If this NE receives AIRP_Hello message, then it returns AIRPHello_Ack message.
In the step 308 of non-head's state, SONET or ATM NE are operated in non-head's mode, as described in detail in Fig. 7 and 5 is discussed respectively.If NE receives AIRP_Hello message, then it returns AIRP_Hello_Ack message.If NE receives AIRP_Close message, then this NE returns AIRP_Ack message, and gets back to the step 300 of initial state.If NE received AIRP_Keep_Alive message from the head before timer stops, then this NE returns AIRP_Keep_Alive_Ack message to the head.If NE does not receive AIRP_Keep_Alive message from the head in timer cycle, then this NE resets its Keep_alive timer, and proceeds to the step 314 of retry state.Every other operation information makes NE remain on the step 308 of operating state.Below describe operating state in detail.
In the step 310 of " non-head " state, NE waits for the reception of AIRP_Leader_Ack message, if NE receives this message in its affirmation timer cycle, then it writes down the information of its head NE, and proceeds to the step 304 of setting up tcp state.In the step 310 of non-head's state, if NE receives AIRP_Leader_Ack message in timer cycle, then its writes down head's information, and proceeds to step 304.If NE does not receive AIRP_Leader_Ack message in timer cycle, then this NE proceeds to the step 300 of initial state.If NE receives AIRP_Hello message, then this NE returns AIRP_Hello_Ack message.
In the step 312 of head's state, the NE of virtual head's node sends AIRP_LeaderAck message to all NE, and these NE send Hello message for head's node.If the value of the state variable re_start of NE is 1, then this NE tells network management system to lose previous head's node.In addition, this NE re_start state variable to 0 that resets, and proceed to the step 316 that NE waits for connection status.If NE receives AIRP_Hello message, then it returns AIRP_Leader_Ack message.
In the step 314 of retry state, if NE receives AIRP_KeepAlive message in timer cycle, then this NE returns AIRP_Keep_Alive_Ack message to the head.If the keepalive timer expiry, then NE set re_start variable is 1, and proceeds to the step 300 of initial state.If NE receives AIRP_Hello message, then it returns AIRP_Hello_Ack message.In the step 316 of waiting for connection status, be connected for virtual head's NE receives the TCP connection request and set up TCP with other NE if elected, then it proceeds to step 318.If head NE do not receive the TCP connection request in timer cycle, head NE hypothesis then, it loses that LAN connects or some other fault takes place LAN, and this NE proceeds to the step 300 of initial state.If NE can not set up TCP with specific node and be connected, then head NE removes this node from its wait list.In this case, the node that is eliminated from wait for list is broadcasted AIRP_Hello message again.If head NE receives AIRPHello message, then it returns AIRP_Leader_Ack message.
In the step 318 of head's operating state, the ATM node enters the virtual head's operating state of ATM, as described in detail in Fig. 6 is discussed.If NE is not the SONET node, then it enters the virtual head's operating state of SONET, as described in detail in Fig. 8 is discussed.Though we suppose in this illustrative is described, ATM NE starts request, and SONET NE responds; In contrast, also can be that SONET NE starts, and ATM NE respond, it is all opposite to describe situation accordingly.In brief, if head NE receives AIRP_Hello message under this state, then this head returns AIRP_Leader_Ack message.The head sends the NE of AIRP_Keep_Alive message to every other connection termly, waits for the reception from these NE corresponding A IRP_Keep_Alive_Ack message.If the head does not receive AIRP_Keep_Alive_Ack message from specific NE, then the head supposes that certain type fault has taken place this NE, just tells network management system this fault, and removes with the TCP of fault NE and be connected.If head NE receives AIRP_Close message, or it does not receive AIRP_Keep_Alive_Ack message, and then it gets back to the step 300 of initial state.Any other operation information will make the head remain on head's operating state in the step 318.
The conceptual block diagram explanation of Fig. 4 is according to the message situation between each NE of the principle of the invention.In this illustrative example, ATM NE head AL is at its relevant NE A1, and NE Ai plays intermediary between the NE AM, and the NE B1 that SONET NE head BL is correlated with to it, NE Bj, NE BN provides identical service.In this example, all ATM NE send AIRP_Recognition_Request message for ATM NE head AL, and are pointed as arrow 400.AIRP_Recognition_Request message comprises: the physical link id information, for example, switch name, the port numbering of slot numbering and atm port.
Each ATM NE comprises the link identification fifo queue, after the link identification request produces, just they is placed in that formation.In case the link identification request arrives front of queue, this request can be transferred to NE head AL.After the link identification request that receives from its relevant NE, ATM head AL just is placed on these requests in its request queue, and this formation is a fifo queue, and when the link identification request appeared in the formation, ATM head AL just handled these requests.Under the situation of FIFO, as in this illustrative example, AL serves these requests according to the order that receives these requests.Other priority also is possible.
Our hypothesis at first arrives NE head AL from the request of Ai, and reaches the front end of AL request queue, and then in step 402, AL sends the request of Ai to SONET head BL.This please be by the outband channel transmission, as the LAN 122 of Fig. 1.After SONET head BL received the AIRP_Recognition_Request message of transmitting from ATM head AL, in step 404, by sending AIRP_Recognition_Notification, BL notified the SONET NE of all connections.In case SONET NE receives this notice, they begin the Link State of its idle link of poll.In step 406, SONET head BL returns AIRP_Recognition_Response and gives ATM head AL.After receiving AIRPRecognition_Response, in step 408, ATM head AL sends AIRPRecognition_Grant message to NE Ai.NE Ai begins to insert identification signal and responds to relevant link 409.According to principle of the present invention, the port that the transformation identification of SONET channel status (bit 6,7,8 of K2) from 000 (free time) to 100 (test signals) connects.This identification utilizes the sonet protection switching signal, as described in detail in Fig. 2 is discussed.After detecting identification signal, in step 410, by sending AIRP_RecognitionDetected message to SONET head BL, SONET NE (the NE Bj in this example) report receives detection signal.
After receiving AIRP_Recognition_Detected message, in step 412, by AIRP_Recognition_Detected message, SONET head NE BL returns the port information of NE Bj and gives ATM head AL; And in step 414, by AIRP_RecognitionDetected message, ATM head AL transmits this information and gives NE Ai.When NE received AIRP_Recognition_Detected message, it stopped to insert the sonet link 409 of identification signal by it, and returned AIRP_Recognition_Ack in step 416 and give ATM head AL.In step 418, ATM NE head AL transmits the AIRP_RecognitionAck message of Ai and gives SONET NE head BL.Then, in step 420, SONET head sends the SONET NE of AIRP_Recognition_Ack message to all connections.After receiving AIRP_Recognition_Ack message, the SONET NE of all connections stops their idle link of poll, and SONET NE Bj checks corresponding to the link of detection signal whether get back to normal condition (free time) with definite this Link State.If Link State is got back to idle condition, then in step 422, NE Bj sends AIRP_Recognition_Ack message to SONET head BL.If Link State is not got back to idle condition, then in step 422, NE Bj sends AIRPRecognition_Nak message to SONET head BL.In case the message of receiving, then in step 424, SONET head BL transmits AIRP_Recognition_Ack or AIRPRecognition_Nak message is given ATM head AL.In response to receiving any message, ATM head AL removes the current identification request of Ai from its formation, and in step 426 AIRP_Recognition_Ack or AIRP_Recognition_Nak message is sent to NEAi.Ai also removes the current top in its link identification request queue.If its link identification formation is not empty, then Ai sends another link identification request to head AL, and process is carried out with regard to beginning from here, as described above.
The format and content that automatic port connects the protocol Data Unit (PDU) that adopts in the discovery procedure is below described, that is, and according to the new identification protocol (AIRP) of interconnection automatically of the principle of the invention.
Each AIRP PDU is the AIRP title, is thereafter AIRP message.
The AIRP title is:
| Version | PDU length |
Version:
The signless integer of 2 eight bit groups comprises the start context of this agreement.The version regulation AIRP protocol version 1 of this technical descriptioon.
PDU length:
The integer of 2 eight bit groups is stipulated the total length of this PDU in the eight bit groups not comprise version and PDU length field.
AIRP utilizes Type-Length-Value (TLV) encoding scheme to encode for the most information of carrying in the AIRP message.
AIRP TLV is encoded into 1 eight bit group the type field, is thereafter the Length field of 2 eight bit groups, is thereafter the Value field of variable-length.
| ????Type | ????Length | ????Value |
Type
How coding Value field is explained.
Length
Stipulate the length of Value field in the eight bit groups.
Value
Eight bit group strings in the Length eight bit groups, that stipulates in its coding type field treats explain information.
Define 14 AIRP type of messages altogether:
AIRP_Hello?TLV：
The Value Field Definition:
| The ATM/SONET group address |
| The MAC Address of transmitting terminal |
| The IP address of transmitting terminal |
AIRP_Hello_Ack?TLV:
The Value Field Definition:
| The ATM/SONET group address |
| The MAC Address of receiving terminal |
| The MAC Address of transmitting terminal |
| The IP address of transmitting terminal |
AIRP_Leader_Ack?TLV:
The Value Field Definition:
| The ATM/SONET group address |
| The MAC Address of receiving terminal |
| The MAC Address of transmitting terminal |
| The IP address of transmitting terminal |
AIRP_Close?TLV:
The Value Field Definition:
| The ATM/SONET group address |
AIRP_Keep_Alive?TLV:
The Value Field Definition:
| The ATM/SONET group address |
| ATM/SONET head's MAC Address |
AIRP_Keep_Alive_Ack?TLV:
The Value Field Definition:
| The ATM/SONET group address |
| ATM/SONET head's MAC Address |
| The MAC Address of transmitting terminal |
AIRP_Reset?TLV：
The Value Field Definition:
| The ATM/SONET group address |
| ATM/SONET head's MAC Address |
| The MAC Address of transmitting terminal |
AIRP_ReeognitiOil?Request?TLV:
The Value Field Definition:
| The ATM/SONET group address |
| The MAC Address of destination |
| The MAC Address of transmitting terminal |
| Message sequence No. |
| Port id |
AIRP_Recognition_Notification?TLV:
The Value Field Definition:
| The ATM/SONET group address |
AIRP_Recognition_Grant?TLV:
The Value Field Definition:
| The ATM/SONET group address |
| The MAC Address of destination |
| Recognition_request message sequence No. |
AIRP_Recognition_Detected?TLV:
The Value Field Definition:
| The ATM/SONET group address |
| The MAC Address of destination |
| The MAC Address of transmitting terminal |
| Recognition_request detects sequence No. |
| The port information that detects |
AIRP_Recognition_Response?TLV:
The Value Field Definition:
| The ATM/SONET group address |
| The MAC Address of destination |
| The MAC Address of transmitting terminal |
| Recognition_request detects sequence No. |
AIRP_AckTLV:
Value Field Definition: AIRP_Nak TLV:
The Value Field Definition:
| The ATM/SONET group address |
With reference to the initiatively AIRP operation of NE of the state diagram discussion among Fig. 5, initiatively NE is the NE of request port identification.The NE of request port identification is referred to as initiatively NE, and the NE of receiving port identification message is referred to as passive NE.In this example, active NE right and wrong head ATMNE.When node begins or reset, AIRP finite state machine (FSM) beginning (restarting).Process is state 1 beginning in idle condition 500, and wherein we have finished system configuration at hypothesis.For example, ATM NE NE-A1 is configured to point out which adjacent NE which link is connected to.Can be configured to know at this point which bar link which adjacent NE connects by though note that NE, at this point and do not know the interconnectivity of port.Link initialization can occur in the beginning/resetting time and the running time of system, and triggers the AIRP state-transition.In order to guarantee once have only an identification signal to send to the recipient, the initialization request of all input links can be placed in the formation of first in first out (FIFO), and wherein only a request at the formation top can trigger state-transition.We suppose that also the default channel state of initialization link (bit 6,7,8 of K2 byte) was 000 (free time).If NE resets, then it sends the virtual head NE of AIRP_Reset message to it.After handling any link initialization expense, ATM NE proceeds to the state 2 of solicited status 502.
At the state 2 of solicited status 502, ATM NE sends the head NE of AIRP_recognition_request message to it.Be included in the AIRP_recognition_request message is the atm link numbering of current request link at the formation top.After sending AIRP_recognitionrequest message, ATM NE waits for the allowance message from head NE.When NE is in state 2,, then this request is placed on the end of request queue if there is another identification request to arrive.Before NE received allowance message from its head (initiatively NE head), if this NE receives the message from passive NE head, then initiatively NE gave up passive head's message.In case initiatively NE receives the AIRP_recognitiongrant message from active head NE, initiatively NE just is converted to the state 3 of " insertion state " 504.
At the state 3 of insertion state 504, initiatively NE triggers its sonet interface driver, so that insert above-mentioned test or identification signal to corresponding to the link that is found port.In addition, initiatively NE waits for the reception from the AIRP_recognition_detected message of active head NE, and the bootwait timer.Under this state,, then it is placed on the end of link identification request queue if another link identification request arrives.Give up any message from passive head NE.In case initiatively NE receives the AIRP_recognitiondetected message from active head NE, initiatively NE is converted to the state 4 of detected state 506, and stops waiting timer.Yet before NE received AIRP_recognitiondetected message from active head NE, if waiting timer stops, ATM NE was converted to the state 5 of notify status 508.
In case at the state 4 of detected state 506, initiatively NE writes down the information that detects, for example, the port link information.This information can be placed in database or the form, and for example, port connects table.After having write down this link information, initiatively NE triggers its sonet interface driver, so that insert idle signal (000) to relevant link.In addition, initiatively NE gives initiatively head NE transmission AIRP_recognition_acknowledgement message, and the bootwait timer.Then, ATM NE is converted to the state 6 of wait state 510.Any other link identification request that arrives during the state 4 is placed on the end of request queue.Give up the message that receives from passive head NE.
Get back to the state 5 of notify status 508, initiatively NE points out to have taken place unusual for active head NE and remove link request from the link identification request queue, and gets back to the state 1 of idle condition 500.If another link identification request arrives, then it is placed on the end of request queue during state 4.Give up the message that receives from passive head NE.
At the state 6 of wait state 510, if active NE receives the AIRP_recognition_Nak message from active head NE, then it stops waiting timer, and is converted to the state 5 of notify status 508.Otherwise initiatively NE should receive the AIRPrecognition_ack message from active head NE, and in the case, NE removes the link identification request from formation, and is converted to the state 1 of idle condition 500.When ATM NE resided in state 6, if another link identification request arrives, then active NE was placed on this request the end of request queue.Give up the message that receives from passive head NE.
With reference to the initiatively AIRP operation of head NE of the state diagram discussion among Fig. 6, initiatively head NE is the NE that serves the port identification request.In this example, initiatively NE is head ATMNE.When node begins or reset, AIRP finite state machine (FSM) beginning (restarting).Process is state 1 beginning in idle condition 600, and wherein we have finished system configuration at hypothesis, comprise that setting up TCP with other NE is connected.Link initialization can occur in the beginning/resetting time and the running time of system, and triggers the AIRP state-transition.Initiatively head NE removes its NE request queue and its link identification request queue, and init state variable my_request_status is 0.In order to guarantee once have only an identification signal to send to the recipient, the initialization request of all input links can be placed in the formation of first in first out (FIFO), wherein has only a request at the top of formation, and it can trigger state-transition.We suppose that also the default channel state of initialization link (bit 6,7,8 of K2 byte) was 000 (free time).Head NE checks its state variable: my_request_status.If this state is 0, then the top of its link identification formation is placed on the initiatively end of ATM NE request queue, and this state of set is 1.If the currency of my_request_status is 1, then the link identification request is placed on the end of link identification formation.Input request from other ATM/ actives NE is placed on the end of identification request queue.Reset message from specific NE impels the head to remove the pending request of all NE from formation.In case ATM NE request queue is a non-NULL, process just proceeds to the state 2 of solicited status 602.
At the state 2 of solicited status 602, ATM NE is from its request queue top retrieval AIRPrecognition_request message, and whether definite transmitting terminal remains " activation ".If do not have message to be placed on the end of ATM NE request queue, then test message in succession, until the requestor who finds relevant message and " activation ".After finding this message, ATM NE sends AIRP_recognition_request message to passive NE head, is SONET NE head in this example.After sending AIRP_recognition_request message, ATM head NE waits for the response message from SONET head NE.ATM head sends the message to pre-configured SONET replay address.Our hypothesis is not that TCP connects between each head, if do not receive response in timer cycle, then supports resend message several times.When NE is during at state 2,, then this request is placed on the end of request queue if there is another identification request to arrive; If head NE produces its identification request, then it is placed on this request the end of its ATM NE request queue.Impel ATM head from request queue, to remove the pending request of all NE from the AIRP_reset message of specific ATM NE.Receive the state 3 that just is converted to responsive state 604 from SONET head's AIRP_Recognition_Response message.
At the state 3 of responsive state 604, ATM NE checks that whether current request is from itself.If then this NE triggers its sonet interface driver, so that insert above-mentioned identification signal to relevant link.If request is from other NE, then head NE sends the NE of AIRP_Recognition_Grant message to request.In addition, head NE waits for the AIRP_Recognition_Detected message from SONET (passive) head, and the bootwait timer.If its other link identification requests arrive, then this request is placed on the end of its link identification formation.If any request from other ATM NE arrives, then this request is placed on the end of head NE request queue.Any reset message from specific ATM NE impels ATM head to remove the pending request of all NE from head ATM-NE request queue.The AIRP_Recognition_Detected message that receives from SONET head makes this process be converted to the state 4 of detected state 606, and waiting timer quits work.If waiting timer stops, or NE receives the AIRP_Nak message from SONET head, and then this head is converted to the state 5 of notify status 608.
At the state 4 of detected state 606, initiatively ATM NE head writes down detected information, whether reexamines this request from itself, if then head NE triggers its sonet interface driver, so that insert idle signal (000) to corresponding link.Then, this NE sends AIRP_Ack message to itself.Otherwise head NE sends AIRP_RecognitionDetected message to corresponding ATM NE.From another ATM NE or receive AIRP_Ack message from itself and just make this head be converted to the state 6 of affirmation state 610.Any reset message from specific ATM NE impels this head to remove the pending request of all NE from its ATM-NE request queue.
At the state 5 of notify status 608, if request is from another NE, then ATM NE head sends AIRP_Nak message, the link when pre-treatment is had the ATMNE of error notification correspondence.This head removes corresponding request from formation.If request is from itself, then this head checks whether its link identification formation is empty.If this formation is not empty, then this head moves to top request in its link identification formation end of ATM-NE request queue.Otherwise it is set to 0 to my_request_status again.Then, this head is converted to the state 1 of idle condition 600.If its another link identification request arrives, then this request is placed on the end of head's link identification formation.If the request from another ATM-NE arrives, then this request is placed on the end of ATM-NE request queue.Any reset message from specific ATM NE impels ATM head to remove the pending request of all NE from the ATM-NE request queue.
State 6 at affirmation state 610, if before timer expiry, do not receive any message, perhaps, if the head receives AIRP_Nak message from the passive side in timer cycle, then NE head quits work timer, and is converted to the state 5 of notify status 608.Otherwise head NE should receive AIRP_Ack message, if this request is from another ATMNE, then this head sends AIRP_Ack message to corresponding ATM NE, and is converted to the state 1 of idle condition 600.During this state,, then this request is placed on the end of its link identification formation if its another link identification request arrives.If another request from another ATM NE arrives, then this request is placed on the end of ATM-NE request queue.Reset message from specific ATM NE impels ATM head to remove the pending request of all NE from its ATM-NE request queue.During this state, ATM NE removes link request from formation.If this request is from it self, then its checks whether its link identification formation is empty.If not sky, head NE moves to the top of its link identification formation the end of ATM-NE request queue.Otherwise head NE is set to 0 to myrequest_status again, and gets back to the state 1 of idle condition 600.
The operation of the passive NE of non-head is described in the state diagram of Fig. 7, and it is from idle condition 700, and wherein we have finished system configuration at hypothesis.Link initialization can occur in the beginning/resetting time and the running time of system, and triggers the AIRP state-transition.We suppose that also the default channel state of initialization link (bit 6,7,8 of K2 byte) was 000 (free time).Under this state, passive non-head NE gives up any message that ATM (initiatively) head sends.After the AIRP_Recognition_Notification message that receives from SONET (passive) head, NE is converted to the state 2 of polling status 702.
At the state 2 of polling status 702, it is the line interface of idle condition (bit 6,7,8 of byte K2 is 000) that SONET NE begins poll it and current Link State.NE gives up any message that ATM head sends.If NE identification and the interface related identification signal of specific circuit, then this NE quits work timer, and is converted to the state 3 of detected state 704.If NE receives the AIRP_Ack message from SONET head in timer cycle, then this NE stops polling operation, and gets back to the state 1 of idle condition 700.If detect timer expiry, then NE proceeds to the state 4 of notify status 706.
At the state 3 of detected state 704, SONET NE sends AIRP_RecognitionDetected message to SONET head, waits for the AIRP_Ack message from SONET head then.Under this state, NE gives up any message that ATM head sends.The state 5 of inspection state 708 is delivered to NE in the reception of AIRP_Ack message.
At the state 4 of notify status 706, SONET NE gets back to the state 1 of idle condition 700 then to the error notification SONET head of taking place in the relevant link.During this state, NE gives up any message that ATM head sends.At the state 5 of inspection state 708, SONET NE checks the current Link State that is identified link.If this state is got back to idle condition: 000, then NE sends AIRP_Ack message for SONET head, and gets back to the state 1 of idle condition 700.Otherwise NE sends AIRP_Nak message for SONET head, and proceeds to the state 4 of notify status 706.Under this state, NE gives up any message that ATM head sends.
The operation of passive head NE is described in the state diagram of Fig. 8, and it is from idle condition 800, and wherein we have finished system configuration at hypothesis.Link initialization can occur in the beginning/resetting time and the running time of system, and triggers the AIRP state-transition.We suppose that also the default channel state of initialization link (bit 6,7,8 of K2 byte) was 000 (free time).After the AIRP_Recognition_Request message that receives from ATM head, NE is converted to the state 2 of replay and polling status 802.
State 2 at replay and polling status 802, SONET NE sends the SONET NE of AIRPRecognition_Notification message to all connections, and beginning poll it and current Link State are the line interface of idle condition (bit 6,7,8 of byte K2 is 000).It also starts the detection timer, and returns AIRP_Recognition_Response message and give ATM head.If NE identification and the interface related identification signal of specific circuit, then it quits work timer.If NE receives the AIRPRecognition_Detected message from specific SONET NE, then it proceeds to the state 3 of responsive state 804.
At the state 3 of responsive state 804, SONET head sends AIRP_RecognitionDetected message to ATM head, waits for the AIRP_Ack message from ATM head then.When receiving AIRP_Ack message, NE proceeds to the state 5 of affirmation state 808.
At the state 4 of notify status 806, SONET NE is by sending AIRP_Nak message informing ATM head, and SONET NE gets back to the state 1 of idle condition 800 then.At state 4, any message that NE storage ATM head sends.
Confirming that each connects the state 5 of NE state 808, SONET head NE sends the SONET NE of AIRPAck message to all connections.This NE stops it self poll.If this NE detects identification signal, it checks corresponding link, checks whether Link State gets back to idle condition.If Link State gets back to idle condition, then NE sends AIRP_Ack message to it self, otherwise its sends AIRP_Nak message to it self.The arrival of AIRP_Ack message or AIRP_Nak message is converted to triggering the state 6 of inspection state 810.At the state 6 of inspection state 810, SONET NE checks the message that receives.If this message is AIRP_Ack, then NE sends AIRP_Ack message to ATM head, and gets back to the state 1 of idle condition 800.Otherwise this NE is converted to the state 4 of notify status 806.
The description that more than provides the specific embodiment of the invention is just illustrative.We do not plan to give detailed description or the present invention are confined to disclosed the sort of form.By means of above narration, various variations and change are possible.Choose and describe these embodiment and be in order the most clearly to explain principle of the present invention and its practical application, thereby make one of skill in the art can utilize the present invention.Our idea is that scope of the present invention only is subjected to the restriction of appended claims.
Claims (28)
1. a network element (NE) comprising:
A port is used to be connected to another network element, and this port arrangement becomes to support at least a transport level Overhead Message;
A device is used for determining that this network element is head NE or non-head NE; With
Outband channel is used for communicating by letter with one or more network element, and this outband channel is configured to transmit port identification request and receiving port identification request, and this port also is configured to and the transmit port detection signal that combines by outband channel transmit port identification request.
2. according to the NE of claim 1, wherein if NE is not head NE, then outband channel is configured to transmit port identification and asks another NE.
3. according to the NE of claim 1, also comprise: the port identification request queue, and wherein NE is configured to the port identification request is placed in this formation.
4. according to the NE of claim 3, wherein if NE is head NE, then this NE is configured to from some other NE receiving port identification request, and they are placed in this formation.
5. according to the NE of claim 4, wherein NE is configured to the port identification request that it produces is placed in this formation.
6. according to the NE of claim 2, wherein outband channel is configured to head NE transmit port identification request.
7. according to the NE of claim 1, wherein NE is SONET NE.
8. according to the NE of claim 1, wherein NE is SDH NE.
9. according to the NE of claim 1, wherein NE is packet switching NE.
10. according to the NE of claim 1, wherein NE is ATM NE.
11. according to the NE of claim 1, its middle port detection signal is that the SONET/SDH protection exchanges messages.
12. according to the NE of claim 1, wherein network element comprises: a plurality of SONET/SDH ports, and by a plurality of ports of poll to detect which port receiving port detection signal, this network element is in response to the reception of port detection signal.
13. according to the NE of claim 4, wherein by the storage port link information, this network element is in response to the detection of port detection signal.
14. according to the NE of claim 4, wherein arrive relevant head NE by the transmit port link information, this network element is in response to the detection of port detection signal.
15. a different machine telecommunication system comprises:
A plurality of circuit-switched networks unit; With
A plurality of packet switching networks unit, each of this network element comprises:
A port is used to be connected to another network element, and this port arrangement becomes to support at least a transport level Overhead Message;
A device is used for determining that this network element is head NE or non-head NE; With
Outband channel is used for communicating by letter with one or more network element, and this outband channel is configured to transmit port identification request and receiving port identification request, and this port also is configured to and the transmit port detection signal that combines by outband channel transmit port identification request.
16. according to the system of claim 15, wherein if NE is not head NE, then each outband channel is configured to transmit port identification and asks another NE.
17. according to the system of claim 15, wherein each NE also comprises: the port identification request queue, and each NE is configured to the port identification request is placed in this formation.
18. according to the system of claim 17, wherein each NE (if it is head NE) is configured to from some other NE receiving port identification request, and they are placed in this formation.
19. according to the system of claim 1, its middle port detection signal is that the SONET/SDH protection exchanges messages.
20. according to the system of claim 1, wherein at least one NE comprises: a plurality of SONET/SDH ports, and by a plurality of ports of poll to detect which port receiving port detection signal, this NE is in response to the reception of port detection signal.
21. according to the system of claim 20, wherein by the storage port link information, this NE is in response to the detection of port detection signal.
22. according to the system of claim 20, wherein by giving relevant head NE transmit port link information, this NE is in response to the detection of port detection signal.
23. in comprising the different machine telecommunication system of a plurality of packet switching NE and a plurality of circuit switching NE, a kind of network element method of the port link information of definite link automatically that is used for may further comprise the steps:
A) head is elected in every group of circuit switching and packet switching network unit;
B) NE gives head NE transmit port identifying information by outband channel request;
C) this head NE sends this request for second head NE, and it is the head NE of other groups NE;
D) second head NE sends the NE that this asks connection, and the NE of request wishes to obtain the port link information from the NE that connects; With
E) by the network element of link transmitting terminal mouth detection signal to connection.
24. according to the method for claim 23, wherein step e) in the port detection signal that sends be that the SONET/SDH protection exchanges messages, this message comprises the port-mark of the port that starts.
25., further comprising the steps of according to the method for claim 23:
F) the network element receiving port detects request, and monitors its port and respond with the reception of detection port detection signal.
26. according to the method for claim 25, wherein step F) may further comprise the steps:
F1) all its idle ports of this network element poll are with the state variation of detection port, this port receiving port detect-message.
27., further comprising the steps of according to the method for claim 25:
G) this network element storage port link information is with the detection of echo port detection signal.
28., further comprising the steps of according to the method for claim 25:
H) this network element transmit port link information arrives the detection of the network element head of its correspondence with the echo port detection signal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/523,615 US7009980B1 (en) | 2000-03-13 | 2000-03-13 | Apparatus and method for automatic port identity discovery in hierarchical heterogenous systems |
| US09/523,615 | 2000-03-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1313693A true CN1313693A (en) | 2001-09-19 |
Family
ID=24085707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01111248A Pending CN1313693A (en) | 2000-03-13 | 2001-03-12 | Device and method for automatic terminal identification discovery in hierarchy different machines system |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7009980B1 (en) |
| EP (1) | EP1135001B1 (en) |
| JP (1) | JP3871895B2 (en) |
| CN (1) | CN1313693A (en) |
| AT (1) | ATE515893T1 (en) |
| AU (1) | AU2645001A (en) |
| CA (1) | CA2336734C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108282385A (en) * | 2018-01-25 | 2018-07-13 | 迈普通信技术股份有限公司 | Port testing method and communication equipment |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6594044B1 (en) * | 2000-03-15 | 2003-07-15 | Lucent Technologies Inc. | Apparatus and method for automatic port identity discovery in heterogenous optical communications systems |
| GB2392285B (en) * | 2002-08-06 | 2006-04-12 | Hewlett Packard Development Co | Method and arrangement for guiding a user along a target path |
| JP4305004B2 (en) * | 2003-02-28 | 2009-07-29 | ソニー株式会社 | Information processing apparatus, content information processing method, and computer program |
| US7486698B2 (en) * | 2003-12-19 | 2009-02-03 | Solace Systems, Inc. | Multiplexing of control and data over an HTTP connection |
| US8295187B1 (en) * | 2004-09-30 | 2012-10-23 | Avaya Inc. | Port-centric configuration methods for converged voice applications |
| US7539150B2 (en) | 2004-11-16 | 2009-05-26 | International Business Machines Corporation | Node discovery and communications in a network |
| US7543300B2 (en) | 2004-11-16 | 2009-06-02 | International Business Machines Corporation | Interface for application components |
| US7453865B2 (en) | 2005-02-16 | 2008-11-18 | International Business Machines Corporation | Communication channels in a storage network |
| US8374502B2 (en) * | 2009-02-27 | 2013-02-12 | Futurewei Technologies, Inc. | Open shortest path first extensions in support of wavelength switched optical networks |
| WO2012171373A1 (en) * | 2011-06-16 | 2012-12-20 | 中兴通讯股份有限公司 | Method and device for controlling automatic discovery of network element |
| US8863082B2 (en) | 2011-09-07 | 2014-10-14 | Microsoft Corporation | Transformational context-aware data source management |
| US10628186B2 (en) * | 2014-09-08 | 2020-04-21 | Wirepath Home Systems, Llc | Method for electronic device virtualization and management |
| CN106936655A (en) * | 2015-12-30 | 2017-07-07 | 阿里巴巴集团控股有限公司 | Chain circuit detecting method, device and the network equipment, controller |
| CN110177010B (en) * | 2019-05-07 | 2022-05-24 | 京信网络系统股份有限公司 | Link switching method and device |
| CN110661666B (en) * | 2019-09-29 | 2022-02-18 | 中国联合网络通信集团有限公司 | Method and device for establishing ring network resources of packet transport network |
| US11178002B1 (en) * | 2020-07-10 | 2021-11-16 | Abl Ip Holding Llc | Autonomous adaptive controller for active wireless lighting communication |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5544163A (en) * | 1994-03-08 | 1996-08-06 | Excel, Inc. | Expandable telecommunications system |
| JP3376144B2 (en) | 1994-12-28 | 2003-02-10 | 日本電気株式会社 | Optical network device and optical transmission system |
| JPH0974412A (en) * | 1995-09-04 | 1997-03-18 | Fujitsu Ltd | Aps system for atm exchange network |
| US5805578A (en) | 1995-10-27 | 1998-09-08 | International Business Machines Corporation | Automatic reconfiguration of multipoint communication channels |
| US5923643A (en) * | 1997-02-27 | 1999-07-13 | Excel, Inc. | Redundancy, expanded switching capacity and fault isolation arrangements for expandable telecommunications system |
| JP3782229B2 (en) | 1998-03-13 | 2006-06-07 | 富士通株式会社 | Path information construction method |
| US6404734B1 (en) * | 1998-10-06 | 2002-06-11 | Telecommuncations Research Laboratories | Scalable network restoration device |
| US6654802B1 (en) * | 1999-02-12 | 2003-11-25 | Sprint Communications Company, L.P. | Network system and method for automatic discovery of topology using overhead bandwidth |
| US6473397B1 (en) * | 1999-08-10 | 2002-10-29 | Nortel Networks Limited | Add/drop multiplexer and method, and Bi-directional line switcher ring featuring such multiplexers |
| US6549513B1 (en) * | 1999-10-12 | 2003-04-15 | Alcatel | Method and apparatus for fast distributed restoration of a communication network |
| US6735215B1 (en) * | 2000-03-11 | 2004-05-11 | Lucent Technologies Inc. | Apparatus and method for automatic port identity discovery in heterogenous systems |
| US6594044B1 (en) * | 2000-03-15 | 2003-07-15 | Lucent Technologies Inc. | Apparatus and method for automatic port identity discovery in heterogenous optical communications systems |
-
2000
- 2000-03-13 US US09/523,615 patent/US7009980B1/en not_active Expired - Lifetime
-
2001
- 2001-02-14 CA CA002336734A patent/CA2336734C/en not_active Expired - Fee Related
- 2001-03-05 AT AT01301987T patent/ATE515893T1/en not_active IP Right Cessation
- 2001-03-05 EP EP01301987A patent/EP1135001B1/en not_active Expired - Lifetime
- 2001-03-09 AU AU26450/01A patent/AU2645001A/en not_active Abandoned
- 2001-03-12 CN CN01111248A patent/CN1313693A/en active Pending
- 2001-03-13 JP JP2001070264A patent/JP3871895B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108282385A (en) * | 2018-01-25 | 2018-07-13 | 迈普通信技术股份有限公司 | Port testing method and communication equipment |
| CN108282385B (en) * | 2018-01-25 | 2021-03-23 | 迈普通信技术股份有限公司 | Port test method and communication equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1135001A2 (en) | 2001-09-19 |
| CA2336734A1 (en) | 2001-09-13 |
| EP1135001B1 (en) | 2011-07-06 |
| AU2645001A (en) | 2001-09-20 |
| ATE515893T1 (en) | 2011-07-15 |
| EP1135001A3 (en) | 2004-07-21 |
| US7009980B1 (en) | 2006-03-07 |
| JP2001292177A (en) | 2001-10-19 |
| JP3871895B2 (en) | 2007-01-24 |
| CA2336734C (en) | 2005-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1313693A (en) | Device and method for automatic terminal identification discovery in hierarchy different machines system | |
| CN1166247C (en) | Interconnect network for operation within communication node | |
| CN100366024C (en) | System and method for processing packets | |
| US7633969B2 (en) | Methods, systems, and computer program products for dynamically adjusting load sharing distributions in response to changes in network conditions | |
| CN1259267A (en) | Interactive video communication over a packet data network | |
| CN1180586C (en) | Apparatus and method of connecting to special wireless internet pocket data communication system | |
| US9271331B2 (en) | Conditional execution of commands | |
| CN1091878A (en) | The identification of packet | |
| CN1324152A (en) | Equipment and method automatic port identification finding for special shaped optical communication system | |
| GB2351886A (en) | Master and slave communications with multiple message frame sent over long link and broken into multiple single message frames sent over short links | |
| CN1375962A (en) | Apparatus and method for automatic port-mark finding in different machine system | |
| US7751443B2 (en) | Intra-chassis packet arbitration scheme | |
| US20050117604A1 (en) | Transport layer protocol for a peripheral module for a communication device | |
| CN1241372C (en) | Method for transmitting data of different applications via packet transmission network, corresponding units and corresponding program | |
| CN100584058C (en) | Information interactive system and implementing method | |
| CN1653826A (en) | Method for the transmission of digital data over several data transmission networks, the associated units and associated program | |
| CN1656466A (en) | Backplane architecture for a media server | |
| JP3522339B2 (en) | Relay transfer system | |
| CN1197310C (en) | Method for linking networks of different modes of transmission and associated devices | |
| KR100606124B1 (en) | Method for call information release of Switched Virtual Circuit in Asynchronous transfer Mode System | |
| KR100713755B1 (en) | An apparatus of high speed processing board and transmission data format | |
| CN1679347A (en) | Method for forwarding signalling messages and corresponding components | |
| JP2002281105A (en) | Apparatus and method for identifying and discovering automatic port in different system | |
| CN1630383A (en) | Method and apparatus for transferring signaling messages | |
| KR20010064592A (en) | Method for allocating channel between base station controller and mobile switching center in mobile telecommunication system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |